FN FAL night sight anyone?
But again, this limits poor players - Cool PKs go out at night with FN FAL Night sight (finally some use of this weapon) and Night Person perk and shoots the blue suit shooting molerats there. However, like this we could make monsters that have greater senses in the dark, making it something like this:
NewPlayer1: Well, I'm off to VC, you wanna come with me?
NewPlayer2: I wouldn't do that, the nights are dangerous, I'm staying right here. The farthest point I'm going is my tent.
NewPlayer1: Seriously, it's nothing that bad! Besides, I have good outdoorsman.
*4 people in Metal Armor with blood all over them limp in NCR*
NewPlayer1 and NewPlayer2: Woah, what happend to you guys?
Metal Armor guy1: Those night deathclaws! We were seven at the start and were on our way from Hub to NCR, but then it started to get late...
Metal Armor guy2: One of our men was just taking a small stop, while we were slowly moving on...
Metal Armor guy3: After about 20 seconds we heard screams and some shots! We all ran back to see if the guy who stood a bit back was OK, but there was just blood, some empty shell casings and a metal armor teared in pieces...
Metal Armor guy4: We were 6 left, 3 of us were searching for a path, other 3 were covering the back. We met the night deathclaws - even more silent, even more agile and even more powerful than a simple deathclaw. The only good thing is they pop-up in nights. Now, if you don't mind, doc pl0x?
NewPlayer1 to NewPlayer2: You know, I changed my mind, I'm staying here too!
That would be a whole new level to roleplaying and other stuff! People at nights just come to the nearest safe spot and talk about what they felt, what they've seen and where they've been! In overall, not a bad idea, just misses something...